Sunrise 5:53 AM   Sunset 8:19 PM Moonrise 5:53 PM   Moonset 3:36 AM

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PZZ530 San Pablo Bay, Suisun Bay, The West Delta And The San Francisco Bay North Of The Bay Bridge- 855 Pm Pdt Mon May 20 2024
Tonight - SW wind 5 to 10 kt. Waves around 2 ft or less. Tue - SW wind around 5 kt, veering to W 10 to 15 kt in the afternoon. Waves around 2 ft or less. Tue night - W wind 10 to 15 kt, becoming sw 5 to 10 kt after midnight. Waves around 2 ft or less. Wed - W wind 5 to 10 kt. Waves around 2 ft or less. Wed night - W wind 10 to 15 kt, easing to 5 to 10 kt after midnight. Waves around 2 ft or less. Thu - NW wind 5 to 10 kt, becoming W 10 to 15 kt in the afternoon. Waves around 2 ft or less. Thu night - W wind 10 to 15 kt, becoming sw 5 to 10 kt after midnight. Waves around 2 ft or less. Fri - SW wind 5 to 10 kt. Waves around 2 ft or less. Fri night - SW wind 10 to 15 kt. Waves around 2 ft or less. Sat - SW wind 10 to 15 kt. Waves around 2 ft or less. Sat night - SW wind 10 to 15 kt. Waves around 2 ft or less.

PZZ500 855 Pm Pdt Mon May 20 2024
Synopsis for the central california coast and bays including the Monterey bay - Greater farallones - .and cordell bank national marine sanctuaries - .
strong and gusty northwest winds continue over the coastal waters through Thursday, with gale force gusts across the outer coastal waters. Expect hazardous conditions and steeper wind waves during the week. Winds gradually easing later in the week.

FXUS66 KMTR 210715 AFDMTR

Area Forecast Discussion National Weather Service San Francisco CA 1215 AM PDT Tue May 21 2024

New AVIATION

SYNOPSIS
Issued at 1224 PM PDT Mon May 20 2024

Typical summer-like pattern to persist throughout the first half of the week. Temperatures are forecast to dip below seasonal averages by the upcoming weekend as an upper level trough impacts the region.

UPDATE
Issued at 841 PM PDT Mon May 20 2024

Pleasant day around the Bay Area and Central Coast as it turned out to be one of the sunnier days out of the last week (yesterday was pretty sunny too). Despite the ample sunshine, temperatures struggled to reach seasonal values. Highs topped out in the upper 60s to lower 80s inland, but much cooler at the coast with highs in the upper 50s to 60s.

As the sun set, some patchy stratus began to form around Monterey Bay, Big Sur coast and SF Peninsula coast. This patchy stratus will fill in a little more and up the Salinas Valley, but much less coverage than a few days ago. What's the reason? Developing offshore flow and drier air. Latest large-scale pressure gradient (SFO-WMC) has finally flipped offshore. Not expecting a strong offshore push, but offshore nonetheless. Obs over the North Bay interior mts already showing NE flow with lower RH. The offshore flow will also lead to milder temperatures in the hills tonight.

Breezy northwest winds will diminish in the evening. Model output shows a moderate confidence (40-65% probability) of MVFR stratus around the region early Tuesday morning, with the period of highest probability from 09-16Z.

No update needed this evening. As noted below Tuesday will be the warmest day over the next few days. Warmest temperatures will be across the interior and away from any marine influence. Speaking of marine influence, the very persistent gusty NW winds has led to some impressive upwelling along the North Bay coast. Current SSTs are in the upper 40s to lower 50s.

MM

SHORT TERM
(This evening through Tuesday)
Issued at 1224 PM PDT Mon May 20 2024

Weak offshore flow aloft is resulting in dry weather conditions this afternoon with minimum relative humidity values between 15-35% for inland areas and those higher up in elevation. Meanwhile, the coast continues to experience onshore flow with higher humidity. Humidity increases overnight in all but the highest elevations with lows generally in the mid-to-upper 40's to low-to-mid 50's.

RH values will be even lower tomorrow as offshore flow aloft persists and will drive drier conditions even closer to the coast.
As such, tomorrow will be the warmest day of the week with mid 80's across the interior and 60's to lower 70's near the coast. People who are incredibly sensitive to heat should take precautions while outdoors and remember to drink plenty of water.

LONG TERM
(Tuesday night through next Sunday)
Issued at 1224 PM PDT Mon May 20 2024

By late week, temperatures cool to near seasonal averages across the interior but coastal locations will still be slightly cooler due to onshore flow. By this upcoming weekend, temperatures region-wide drop below average as a mid/upper level trough more directly impacts the region. This systems looks fairly dry with ensemble guidance indicating very low chances of accumulating precipitation with it Friday into Saturday morning. If any precipitation does fall it will be light and not very impactful. Guidance from the Climate Prediction Center indicates slightly below average temperatures and slightly above average precipitation through the end of the month.

AVIATION
(06Z TAFS)
Issued at 1211 AM PDT Tue May 21 2024

Generally VFR conditions for the interior through the night, with MVFR stratus persisting around Monterey Bay through the late morning hours.

Vicinity of SFO... VFR through the TAF period. Light onshore winds overnight with breezy conditions developing by Tuesday afternoon.
Peak gusts generally in the 20-25 kt range into early Tuesday evening.

SFO Bridge Approach... Similar to SFO.

Monterey Bay Terminals...Light onshore winds overnight with MVFR stratus persisting through mid to late Tuesday morning. Clearing this afternoon with modest onshore winds, with stratus returning tonight.

MARINE
(Today through Saturday)
Issued at 907 AM PDT Mon May 20 2024

Strong and gusty northwest winds persist over the coastal waters through Thursday. Expect hazardous conditions and steeper wind waves during the week. Winds look to ease later in the week.

MTR WATCHES/WARNINGS/ADVISORIES
CA...None.
PZ...Small Craft Advisory until 3 PM PDT Wednesday for Pt Arena to Pt Reyes 0-10 nm.

Small Craft Advisory until 3 AM PDT early this morning for Pt Reyes to Pigeon Pt 0-10 nm.

Small Craft Advisory from 3 PM this afternoon to 3 PM PDT Wednesday for Pt Reyes to Pigeon Pt 0-10 nm.

Gale Warning until 3 PM PDT Wednesday for Pt Arena to Pt Reyes 10-60 NM.

Gale Warning until 3 AM PDT Wednesday for Pigeon Pt to Pt Pinos 10-60 NM.

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San Francisco
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Tue -- 04:35 AM PDT     Moonset
Tue -- 05:07 AM PDT     -0.20 feet Low Tide
Tue -- 05:54 AM PDT     Sunrise
Tue -- 12:00 PM PDT     4.05 feet High Tide
Tue -- 04:33 PM PDT     2.34 feet Low Tide
Tue -- 06:52 PM PDT     Moonrise
Tue -- 08:18 PM PDT     Sunset
Tue -- 10:50 PM PDT     5.79 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION

San Francisco, California, Tide feet

Golden Gate Bridge .8 mi E .
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Tue -- 12:07 AM PDT     -0.00 knots Slack
Tue -- 03:35 AM PDT     -2.97 knots Max Ebb
Tue -- 04:35 AM PDT     Moonset
Tue -- 05:54 AM PDT     Sunrise
Tue -- 07:17 AM PDT     0.00 knots Slack
Tue -- 10:18 AM PDT     3.02 knots Max Flood
Tue -- 01:28 PM PDT     -0.01 knots Slack
Tue -- 04:03 PM PDT     -1.60 knots Max Ebb
Tue -- 06:52 PM PDT     Moonrise
Tue -- 07:04 PM PDT     0.01 knots Slack
Tue -- 08:18 PM PDT     Sunset
Tue -- 09:52 PM PDT     2.31 knots Max Flood
Tide / Current data from XTide NOT FOR NAVIGATION

Golden Gate Bridge .8 mi E ., San Francisco Bay, California Current, knots

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